JDM specialist Japanparts.com

For Vspec. Pipe dia.: Main 60.5x2,Bypass 38x2 This product can be used with an HKS GT Sports Turbine KIT or stock turbine.This kit cannot be used with HKS GTIII sports turbine kit. For SKYLINE GT-R Vspec, BNR34, Engine RB26DETT, MY01/1999 - 08/2002 Features: A stock extension is designed to merge the main port (turbine exhaust) and bypass port (wastegate actuator) in turbine exhaust housing. This causes the exhaust stream from the main port to interfere with the bypass port stream when the actuator is opened. The primary and secondary exhaust pressure will rise causing the boost pressure to drop, which can cause a loss in power. The HKS Extension Kit will optimize the turbines performance with minimal power loss. The HKS Extension Kit utilizes an individual main port (turbine exhaust) and bypass port (wastegate actuator) to reduce the exhaust gas interference and provide a smoother exhaust flow. This will also reduce backpressure and improve the boost response throughout the RPM range. Even with the stock turbine, the exhaust gas merges in the exhaust housing. This exhaust gas interference can be prevented by a divider in the exhaust flange. The pipes connect towards the lower part of the extension housing where the exhaust gas pressure is lower. The main pipe's diameter is enlarged at the turbine outlet so the swirl flow caused by exhaust gas interference can be reduced. This will also prevent the secondary exhaust pressure from rising, and stabilize the boost pressure to increase the engine output. The flange is made with a high structural steel material, and the piping is made with a high heat resistant and durable Stainless (SUS304). These components will also improve the engine compartment appearance. Note: This product can be used with an HKS GT Sports Turbine KIT or stock turbine.

Pipe dia.: Main 60.5x2,Bypass 38x2 This product can be used with an HKS GT Sports Turbine KIT or stock turbine.This kit cannot be used with HKS GTIII sports turbine kit. For SKYLINE GT-R BNR32, BCNR33, BNR34 (except Vspec), Engine RB26DETT, MY08/1989 - 08/2002 Features: A stock extension is designed to merge the main port (turbine exhaust) and bypass port (wastegate actuator) in turbine exhaust housing. This causes the exhaust stream from the main port to interfere with the bypass port stream when the actuator is opened. The primary and secondary exhaust pressure will rise causing the boost pressure to drop, which can cause a loss in power. The HKS Extension Kit will optimize the turbines performance with minimal power loss. The HKS Extension Kit utilizes an individual main port (turbine exhaust) and bypass port (wastegate actuator) to reduce the exhaust gas interference and provide a smoother exhaust flow. This will also reduce backpressure and improve the boost response throughout the RPM range. Even with the stock turbine, the exhaust gas merges in the exhaust housing. This exhaust gas interference can be prevented by a divider in the exhaust flange. The pipes connect towards the lower part of the extension housing where the exhaust gas pressure is lower. The main pipe's diameter is enlarged at the turbine outlet so the swirl flow caused by exhaust gas interference can be reduced. This will also prevent the secondary exhaust pressure from rising, and stabilize the boost pressure to increase the engine output. The flange is made with a high structural steel material, and the piping is made with a high heat resistant and durable Stainless (SUS304). These components will also improve the engine compartment appearance. Note: This product can be used with an HKS GT Sports Turbine KIT or stock turbine.

Un-painted. Only for applied model D and after with Varis front spoiler (257-333-033-1 or 257-333-033-2).

Unsuitable for MS or AS .

Left single muffler. Main pipe diameter: 70 (SUS304). Tail diameter: 115 (titanium). It fits Type RA-R.

Please choose it for (#270005) before M/C or (#270006) after M/C

Material: SUS304 (tail is titanium). Middle pipe Diameter: 70mm to 60mmx2. Main Silencer Diameter: 160mm. Tail: 115mm

Price is for one side, so please choose it for RH(80673) or LH(80674).

WRX RA STI Sedan applied C-D (manual window) use. Price is for one (It can use it for front and rear).

WRX RA STI Sedan applied E-G (manual window) use. Price is for one (It can use it for front and rear).